Apparatus for analyzing gases.



PATENTBD Nov, 17,1903.

C C. TUTWILER. APPARATUS FOR ANALYZING GASES.

' APPLICATION FILED MAY 3. 1902.

H0 MODEL.

UNITED STATES Patented November 1"?, 1903.

i PATENT OFFICE.

CARRINGTON C. TTWILER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T THE UNITED GAS IMPROVEMENT COMPANY, OE PHILADELPHIA, PENN- SYLVANIA, A CORPORATION OF PENNSYLVANIA.

APPARATUS FoR ANALYZI'NG GASES.

SPECIFICAIION forming part of Letters Patent No. 744,132, dated November 17, 1903.

Application filed May 3, 1902. SeralNc. 105.742x (No model.)`

To @ZZ whom, t may concern: Be it known that I, CARRINGTON C. TUT WILER, a citizenof the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Apparatus for Analyzing Gas, of which the following is a specification. n

In the analysis of gas a measured quantity 1o thereof is subjected to the absorptive iniiuences of various reagents, and the gas during such treatment by absorption is frequently measured; and it is one of the objects of the present invention to provide an apparatus in which this kind of analysis can be made with greater facility and rapidity thanV heretofore and in which the various parts are suiiiciently well supported mechanically to obviate suchdefects as sagging of certain zo parts, which heretofore occurred.

To these and other ends hereinafter explained the invention comprises the improvements to be presently'set forth and iinally claimed.

The nature, characteristic features, and scope of the invention will be more fully understood from the following descriptiomtaken in connection'with the accompanying drawings, forming part hereof, and in which Figure 1 is a view, principally in side elevation,of an apparatus embodying features of the invention. Fig. 2 is a perspective view illustrating a portion of the apparatus shown in Fig. 1. Fig. 3 is a detached view illus- 3 5 trating a portion of the apparatus shown in Fig. 2. Fig. 4L is a detail view of the threeway valve shown in Fig. 2. Figs. 5, 6, 7, and

S are sectional views illustrating diderent positions of a four-way valve shown in Fig.

4o 1, and Fig. 9 is a diagrammatic perspective view illustrating some of the passages ofthe plug shown in Figs. 5 to 8.

In the drawings, 1 is a four-way cock. Its

seat or casing is provided withV four ports or 45 openings. Three of them, 2,73, and4, are arranged in one vertical plane, and 2 and Sare located at the top, and eis located at the bottom. 5 is another port or opening at the back of the casing and located ninety degrees from 5o or midway between ports 4 and 2 and 3. The

port a is connected with a burette, havinga leveling-bulb 7 connected with it by avalved -iieXible connection or tube 8. The burette 6 may be somewhat enlarged, as at 9, so that its height may be somewhat diminished, while 5 5 its capacity is not changed. The burette is of course graduated in the ordinary and wellunderstood manner.

The port or opening 5 has connection, as by -a properly-bent capillary tube ,with the manometer 10, which is graduated and the Pettcsson tube of which extends into the waterjacket 11, which also contains the burette and which serves to insure uniform conditions of temperature.

The port or opening 2 communicates by means of a capillary or other appropriate tube 12 with the pipette 13, which is commonly designated the potash-absorption pipette. The pipette 13 is shown as supported upon an adjustable stand 14, 1

The opening or port 3 communicates, as by a tube 14, with one part ofra three-way valve 15, Fig. A. The other ports 16 and 17 of this three way valve 15 communicate, respec- 7 5 tively, with one of the two double absorptionpipettes, (designated,respectively, 1S and 19.) Suitable bent tubes or pipes are employed for this purpose. The double absorption-pipettes of each of the two may be caused to both cooperate with a common seal 20, as by means of a pipe 21, which is connected with the cross-pipe 22. The cross-pipe 22 can be provided with stoppered openings 23 and '24, of which one appertains to each of the two double 85 absorption pipettes and affords means by which the proper reagent or reagents can be introduced into it. The plug 25 of the valve 1 is provided with two parallel diagonal passages 26 and 27, arranged in the same plane, and these are so arranged that two of vtheir openings are in a plane transverse to the axis of rotation of the plug. The purposeof this arrangement is that the passage 27 may communicate with the port 4f, as shown in Fig. 5, 95 and that the passage 26 may also communicate with the port 4, as shown in Fig. 6. The passage 26 is provided with a branch passage 28, which extends axially of the plug and then radially thereof, so as to penetrate the periphroo ery of the plug in the plane of the ports 4: and 5. The purpose of this arrangement of passages in the plug is to provide for connecting the burette 6 with the manometer 10, or with the pipette 13, or with the set of pipettes 18 and 19, or with none of these without disconnecting any of the apparatus and by the simple operation of turning or positioning the plug.

As shown in Fig. 5, the b urette has connection by way of et, 27, 3, and 14 with the valve l5. This latter may be positioned to bring 1-/1 into communication with the double absorption-pipette 19, as shown, or by turning the plug of the valve 15 14 can be brought into communication with the double absorption-pipette 18. In this Way advantage may be taken of the reagents contained in either 18 or 19, as the circumstances may require. ln putting these reagents into the pipettes air is admitted to them by properly positioning the valve 15 and disconnecting the tube 14 at the tubular coupling l). Thus by the described manipulation of the plugs of the valves 1 and 15 gas may be submitted to two kinds of reagents contained in the parts 18 and 19. As shown in Fig. 6, the burette 6 is in communication by Way of 4, 26, 2, and 12 with the absorption-pipette 13, and advantage in this way can be taken of the reagents which this pipette contains. By positioning the valve shown in Fig. 7 communication is established from the burette G by way of the branch 2S and part of the passage 26 and the port or opening 5 on the back of the valvecasin g with the manometer 10. By positioning the Valve as shown in Fig. 8 none of the openings or passages in its plug communie-ate with the openings or passages in the casing, so that the burette and all other parts of the apparatus are isolated from each other.

From the foregoing description it is obvious that the described manipulation of the valves 1 and 15 greatly facilitates the completion of a gas analysis and effects a material saving in time and, further, that the apparatus is all Well and evenly supported and isv therefore not likely to sag or get out of adjustment.

lt will be obvious t0 those skilled in the art to which the invention relates that modifications may be made in details Without departing from the spirit thereof. Hence l do not limit myself to the precise construction and arrangement of parts hereinabove set forth, and illustrated in the accompanying drawings; but,

Having thus described the nature and objects of the invention, what l claim as new, and desire to secure byLetters Patent, is-

1. Gas-analyzing apparatus comprising the combination of a burette, a manometer, a pipette, two double absorption-pipettes having a common seal and valved pipe connections for directing gas to either of the two, a fourway cock for establishing communication between the burette, the pipette, the two double absorptionpipettes and the manometer and for isolating the burette from the same, and pipe connections, substantially as described. y 2. ln a gas-analyzing apparatus the combination of two double absorption-pipettes having a common seal, a burette having a plugvalve, and a single tube communicating with the burette through a single opening in the plug-valve and having a valve and branches to each of the tWo pipettes, substantially as described.

3. In a gas-analyzing apparatus the combination of two double absorptionpipettes, a seal common to both pipettes, and stoppered branch-pipe connections between the seal and the pipettes, substantially as described.

4. In a gas-analyzing apparatus and in combination with the burette, the manometer and the pipettes, a fourway cock comprising a casing fitted with three openings in the same plane whereof two extend upward and one extends downward and with a fourth opening arranged in a plane at right angles to the iirstmentioned plane, a plug tted with two parallel inclined passages arranged in the same plane and with the end of one vertically in line with the end of the other and itted with a branch passage which extends axially and radially and communicates with one of the first-mentioned passages substantially as described, and pipe connections, .substantially as specified.

In testimony whereof I have hereunto signed my name.

OARRINGTON C. TUTWILER. In presence of- WM. J. JACKSON, K. M. GILLIGAN. 

